Hollow Metal–Organic Framework Microparticles Assembled via a Self-Templated Formation Mechanism

Lee, Ilrang; Choi, Soo Hyuk; Lee, Hee Jung; Oh, Moonhyun

doi:10.1021/acs.cgd.5b00919

Cited by 53 publications

(43 citation statements)

References 47 publications

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“…[47,63,64] Figure 2 shows the optical photographs of NiO WCP and Ni MOF and SEM images of Ni MOF. [38,66,67] 2.2. Wherein, Ni MOF appears less denser (see Figure S3 in ESI).…”

Section: Physical and Chemical Characterizationsmentioning

confidence: 99%

An Insight on the Electrocatalytic Mechanistic Study of Pristine Ni MOF (BTC) in Alkaline Medium for Enhanced OER and UOR

et al. 2018

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Hydrogen production plays a major role in technologies for renewable energy storage. Water and urea electrolysis (WE, UE) are promising processes in this regard. The oxygen evolution reaction (OER) and urea oxidation reaction (UOR), respectively, are limiting the efficiency of the overall process. As catalysts for these reactions, metal-organic frameworks (MOF) have gained increasing attention due to their combinations and co-existence of metal and organic moiety properties. Here, we investigated the catalytic behavior of Ni MOF (1,3,5-Benzenetricarboxylic acid (BTC)) towards OER and UOR in alkaline medium on carbon paper (CP) as a support. The Ni MOF exhibits 346 mV overpotential (h) at a current density of 10 mA cm À2 , 79.03 A g À1 specific-mass activity at 400 mV of h than compared to wet chemically prepared (WCP) NiO and RuO 2 for OER in 1 M KOH. Meanwhile, % 230 mV of h at 10 mA cm À2 current density with appreciable stability for 12 hours for Ni MOF in 30 % KOH was also observed. For UOR in UE, Ni MOF shows an onset potential of 1.34 V vs. RHE and 63.15 mA cm À2 current density at 1.5 V vs RHE in 1 M KOH in the presence of 1 M urea. The observed results of OER and UOR catalytic behavior are better than wet chemically prepared (WCP) NiO and noble benchmark RuO 2 catalyst under identical conditions. The results suggested that the MOF plays a major role in enhancing the catalytic activity by the facile formation of Ni(OH) 2 /NiOOH, stability and electronic properties due to their porous and interconnected structure.

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“…[47,63,64] Figure 2 shows the optical photographs of NiO WCP and Ni MOF and SEM images of Ni MOF. [38,66,67] 2.2. Wherein, Ni MOF appears less denser (see Figure S3 in ESI).…”

Section: Physical and Chemical Characterizationsmentioning

confidence: 99%

An Insight on the Electrocatalytic Mechanistic Study of Pristine Ni MOF (BTC) in Alkaline Medium for Enhanced OER and UOR

et al. 2018

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“…Wang and co‐workers presented hollow MOF‐2 (Zn/Ni) nanocubes with a hierarchical structure assembled by an MOF‐2 (Zn/Ni) intermediate . Hollow Zn–BTC microparticles were also synthesized with the similar process …”

Section: Preparation Of Hollow Mof Micro/nanostructures and Their Dermentioning

confidence: 99%

Hollow Metal–Organic‐Framework Micro/Nanostructures and their Derivatives: Emerging Multifunctional Materials

et al. 2018

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adma.201803291.Hollow metal-organic framework (MOF) micro/nanostructures and their derivatives are attracting a great amount of research interest in recent years because their hierarchical porous structures not only provide abundant, easily accessed metal sites but also endow 3D channels for rapid mass transport. As a result, they demonstrate significant advantages in many applications including catalysis, gas sensors, batteries, supercapacitors, and so on. Nevertheless, studies on hollow MOFs and their derivatives are still at the beginning of this field, and the relationship between their structures and application performances is not yet reviewed comprehensively. Herein, the synthetic strategies and practical applications of hollow micro/nanostructured MOFs and their derivatives are summarized, and their corresponding prospects are also discussed.

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“…In the self‐templated system, an inside‐out Ostwald ripening process may be one of the most efficient routes to construction of self‐assembled hollow structures . For example, in a typical hollow MOF microparticle assembly process, the initial solid‐Zn‐BTC microspheres are formed rapidly and function as a template to support the growth of new MOF particles.…”

Section: Architectural Strategies For Assembled Hollow Superstructuresmentioning

confidence: 99%

“…For example, in a typical hollow MOF microparticle assembly process, the initial solid‐Zn‐BTC microspheres are formed rapidly and function as a template to support the growth of new MOF particles. [49a] Simultaneously, dissolution of the solid‐Zn‐BTC microspheres results in the formation of hollow MOF structures with a shell layer composed of several nanosized particles.…”

Section: Architectural Strategies For Assembled Hollow Superstructuresmentioning

confidence: 99%

Architectural Design of Self‐Assembled Hollow Superstructures

et al. 2018

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Colloidal nanoparticle assemblies are widely designed and fabricated via various building blocks to enhance their intrinsic properties and potential applications. Self-assembled hollow superstructures have been a focal point in nanotechnology for several decades and are likely to remain so for the foreseeable future. The novel properties of self-assembled hollow superstructures stem from their effective spatial utilization. As such, a comprehensive appreciation of the interactive forces at play among individual building blocks is a prerequisite for designing and managing the self-assembly process, toward the fabrication of optimal hollow nanoproducts. Herein, the emerging approaches to the fabrication of self-assembled hollow superstructures, including hard-templated, soft-templated, self-templated, and template-free methods, are classified and discussed. The corresponding reinforcement mechanisms, such as strong ligand interaction strategies and extra-capping strategies, are discussed in detail. Finally, possible future directions for the construction of multifunctional hollow superstructures with highly efficient catalytic reaction systems and an integration platform for bioapplications are discussed.

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Hollow Metal–Organic Framework Microparticles Assembled via a Self-Templated Formation Mechanism

Cited by 53 publications

References 47 publications

An Insight on the Electrocatalytic Mechanistic Study of Pristine Ni MOF (BTC) in Alkaline Medium for Enhanced OER and UOR

An Insight on the Electrocatalytic Mechanistic Study of Pristine Ni MOF (BTC) in Alkaline Medium for Enhanced OER and UOR

Hollow Metal–Organic‐Framework Micro/Nanostructures and their Derivatives: Emerging Multifunctional Materials

Architectural Design of Self‐Assembled Hollow Superstructures

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